Machine for truing or facing band-wheels



(No Model.) 2 Sheets-Sl1eet 1.

A. J. WEST. MACHINE FOR TRUING OR FACING BAND WHEELS.

No. 599,374. Patented Feb. 22,1898.

(No Model. 2 S11eets-Sheet 2.

A. J. WEST. MACHINE FOR TRUING OR FACING BAND WHEELS. No. 599,374. Patented Feb. 22,, 1898.

ARNOLD J. WEST, OF ABERDEEN, XVASHINGTON.

MACHINE FOR TRUING OR iFAClNG BAND WHEEILS.

SPECIFICATION forming part Of Letters Patent N0. 599,374, dated. February 22, 1898.

Application filed April 29, 1897. Serial ITO-$34,415. (N0 model.)

To all whom it may concern:

Be it known that I, ARNOLD J. \VEST, a citi-. zen of the United States,residing at Aberdeen, in the county of Chehalis and State of Washington, have invented a new and useful Machine for Truing or Facing Band Wheels, Pulleys, &c. of which the following is a specification.

This invention belongs to that class of machines constructed with especial reference to facing and truing band Wheels, pulleys, and rolls, the principal object being to operate the grinding-wheel from the band wheel or pulley to be trued or faced and to devise simple, effective, and easily-operated means for properly adjusting the grinding-wheel and shifting it laterally across the face of the Wheel or pulley being acted upon. While the machine is designed for general application, in its specific form it is particularly constructed for facing the upper and lower wheels of band-saw mills, the band-wheels being trued without requiring a removal and readjustment of the machine when placed properly to act upon either Wheel.

For a full understanding of the merits and advantages of the invention reference is to be had to the accompanying drawings and the following description.

The improvement is susceptible of various changes in the form, proportion, and the minor details of construction Without departing from the principle or sacrificing any of the advantages thereof, and to a full disclosure of the invention an adaptation thereof is shown in the accompanying drawings, in Which- Figure 1 is a perspective view of a machine especially designed for carrying into effect the objects of this invention. Fig. 2 is a top plan view. Fig. 3 is a longitudinal section on the line X X of Fig. 2, looking in the direction of the arrow. Fig. 4 is a section on the line Y Y of Fig. 2, showing the swing-frame elevated and adjusted by dotted lines With reference to the elevating-shaft.

Corresponding and like parts are referred I to in the following description and indicated in the several views of the accompanying drawings by the same reference characters.

The framework for supporting the working parts comprises base-timbers 1, upper longitudinal timbers 2, uprights 3, and transverse at its front end and consists of longitudinal bars 9 and intermediate connecting-bars 10. A shaft 11 is rotatably and slidably mounted in bearings at the front end of the swingframe and supports a grinding-wheel 12 and a band-pulley 13, both secured on the shaft so as to revolve and move laterally therewith. A belt 14: connects the pulley 13 with the drum 6, whereby motion imparted to the said drum is transmitted to the grinding-wheel through the belt and the parts 13 and 11.

The grinding-wheel may be of emery, natural stone, or other material in general use in the art of grinding and polishing, and being comparatively narrow is required to be shifted laterally, so as to traverse the length of the pulley or roll being faced, and to effect this end a shipping mechanism has been devised and consists of a feed-screw 15, journaled in the longitudinal bars 9 of the swingframe and having one end made angular or otherwise constructed to receive a crank 16, by means of which the feed-screw is rotated in one or the other direction, and a block 17, mounted upon the feed-screw and reinforced by plates 18, secured to its sides, one of the plates being extended forwardly and entering the space formed between the grinding wheel and band-pulley 13, so as to effect a movement of the shaft 11 to shift the grinding-wheel laterally as desired. The plates 18 have vertical extensions 19, between which the belt 14: passes,whereby the latter is caused to move laterally with the grinding-wheel and band-pulleyl3 and is prevented from leaving the latter when shifting the grinding-Wheel. Curved bars 20, toothed at their rear edges, providing racks, are secured at their extremities to the upper and lower timbers 2 and 1 and are concentric with the shaft 5. An elevating-shaft 21 is journaled near its ends in bearings provided on the longitudinal bars 9 and has pinions 22, which intermesh with the rack-bars 20, so that upon turning the shaft 21 the front end of the swing-frame 8 will be raised or lowered, as required, provision being had for turning the shaft 21 by making one end angular to receive the crank 16,which is detachably fitted on the outer end of the feed-screw, so as to be used with either the shaft 21 or the feed-screw. A dog 23, pivoted to one of the longitudinal bars 9, is adapted to engage with a pinion 22 and hold the swingframe in an adjusted position. The bearings 24 for the shaft 21 are elongated vertically to admit of the swing-frame having a limited vertical movement independently of the shaft 21, which is essential to secure a nicety of adj ustment when elevating the swing-frame to bring the grinding-wheel in contact with an upper band Wheel or pulleyto be faced. Setscrews 25 are threaded into openings in the longitudinal bars 9 and enter the upper portion of the bearings 24 and engage with the shaft 21, and when the latter has beenadjusted to the limit of its upward movement, which will occur when the grinding-wheel engages with the upper band wheel or pulley to be faced, a small adjustment of the swingframe can be had by turning the set-screws,

27 and support a shaft 28, hearing a frictionpulley 29 to engage with the band wheel, pulley, or roll to be trued or faced, so as to take power therefrom. A ban d-wheel 30 is secured to the projecting end of the shaft 28, and a drive-belt 31 connects the band-wheel 30 with the band-pulley 7, whereby power is transmitted to the shaft 5 for operating the grinding-wheel in the manner set forth. Tension means are interposed between the bars 26 and the base-timbers 1 and consist of threaded rods 32, springs 33, mounted upon the rods 32, and adj usting-nuts 34, mounted upon the threaded ends of the rods 32 and confining the springs 33 between them and the bars 26. These tension means hold the friction-pulley in engagement with the band-wheel or part being faced or trued and make provision for allowing for the part removed to effect the facing or truing, thereby obviating the necessity for the attendant to look after means to insure a positive engagement at all times between the friction-pulley and the part being acted upon.

' In the event of the wheels of band-saw mills requiring to be trued or faced the machine to move the swing-frame to carry the grinding-wheel from one band-wheel to the other in the manner set forth. Having thus described the invention, what is claimed as new is 1. In a machine for truin g and facing bandwheels, or the like, the combination of a shaft bearing a friction-pulley to be driven from the part to be faced, a drum receiving motion from the said shaft, a swing-frame mounted in line with the axis of the drum, a shaft slidably mounted in bearings provided on the swing-frame and bearing a grinding-Wheel and band-pulley, a shipper mechanism for moving the shaft to shift the grinding-wheel laterally, a belt connecting the band-pulley with the drum, and means for raising and lowering the free end of the swing-frame, sub stantially as set forth for the purposev described.

2. In a machine for facing and truing bandwheels, the combination of a drum, a laterally-shiftable grinding-wheel having a bandpulley connected therewith, a belt connecting the band-pulley with the drum, a feedscrew, and a block mounted upon the feedscrew and having vertical extensions to receive a portion of the said belt between them, .and provided with an extension to engage with the grinding-wheel and band-pulley for shifting them laterally, substantiallyas set forth.

3. In a machine for truing and facing bandwheels, or the like,the combination of a framework, a movable frame, means for adjusting the movable frame, comprising a shaft mounted in elongated bearings, set-screws extending into the said bearings and adapted toengage at their inner ends with the said shaft, and a grinding-wheel applied to the movable frame, substantially as and for the purpose set forth.

4. In a machine for truing and facing bandwheels, or the like, the combination of a frame bearing a grinding-wheel, bars having pivotal connection with the frame and bearing a shaft driven from the band-wheel or part being faced or acted upon and in connection with the grinding-Wheel for driving the latter, and a tension mechanism between the frame and pivoted bars,substantially as and for the purpose set forth.

5. In a machine for truing and facing bandwheels, or thelike, the combination of a frame bearing a grinding-wheel, bars pivoted to the frame and bearing a shaft to be driven from the band-wheeler part to be faced and in connection with the grinding-wheel for driving the latter, threaded rods between the frame IIO and pivoted bars, springs mounted upon the threaded rods, and adjusting-nuts for regulating the tension of the springs,substantially as and for the purpose set forth.

6. In a machine for facing and truing band- Wheels, or the like, the combination of aiframe, a movable frame bearing a grinding-Wheel, rack-bars applied to the main frame, a shaft mounted in elongated bearings of the movable frame and provided with pinions intermeshing with theraok-bars, and set-screws applied to the movable frame and extendinginto the 

